CARMENES VIS RV data of GJ 338 B folded in phase with different periods. Each panel has been corrected for the others signals. Top panel: RV data folded in phase with the stellar rotation period of 16.6 d. Overplotted it is the best sinusoid function reproducing the data with an amplitude of 2.7 ± 0.5 m s⁻¹. Second panel: RV folded in phase with the 8.3 d signal. Another sinusoid function is fit to these data with a RV amplitude of 1.8 ± 0.6 m s⁻¹. Third panel: RV data folded in phase with the planetary orbital period of 24.4 d. The best Keplerian solution for the planet, with an RV amplitude of 2.8 ± 0.4 m s⁻¹, is shown with the black line. Bottom panel: final RV residuals after removing the three signals (16.6, 8.3, and 24.4 d) have an rms = 3.0 m s⁻¹. Open circles represent the RVs that deviate more than 2σ from the trend of the original data and that were not included in the analysis but are shown in this figure.